Perforated outlet pipe for forward osmosis or pressure retarded osmosis, and forward osmosis or pressure retarded osmosis module comprising the same

Abstract

The present invention relates to a porous outlet tube for osmosis and to an osmosis module including same. The porous outlet tube for forward osmosis or pressure retarded osmosis accordin to an embodiment includes a hollow tube having a plurality of first through-holes and second through-holes which are formed to penetrate therethrough in a length direction so as to enable a fluid to be fed and discharged therethrough; a bypass tube that is concentrically arranged along a length direction inside the hollow tube; and a separation disc that is formed along the edge direction of the bypass tube so as to block a fluid that is fed to the top end of the hollow tube and the other fluid that is fed through the second through-holes.

Description

technical field [0001] The present invention relates to a porous outlet pipe for permeation and a permeation module including the same, in more detail, relates to a method of concentrically arranging small-diameter bypass pipes in a central pipe so that when the pipes are connected in series A porous outlet pipe for forward osmosis or pressure delayed osmosis and a forward osmosis or a forward osmosis including the same that increase the flow of fluid inside, thereby reducing the differential pressure that would be generated when the fluid moves to the inner side of the forward osmosis or pressure delayed osmosis separation membrane Pressure delayed osmosis module. Background technique [0002] If a semipermeable membrane permeable to water but seemingly impermeable to solutes (ions and molecules) dissolved in water is placed between a high-concentration solution and a low-concentration solution, movement of the solvent of the low-concentration solution to the high-concentra...

AI Technical Summary

Problems solved by technology

[0011] Therefore, the outlet pipe designed to be pressure-resistant to high pressure used in the reverse osmosis method has the problem that it cannot be used equally for the forward osmosis method or the pressure retarded osmosis method

like figure 1 As shown, the outlet pipe 1 used for the existing forward osmosis or pressure-retarded osmosis has a structure in which the inflowing fluid changes the flow path due to the separator 3, and then is discharged to the separation membrane side through the outflow hole 2, so it cannot be improved to the forward osmosis. Separation membrane or pressure delays the inflow of fluid inside the osmotic separation membrane, and the osmotic gradient cannot be smoothly generated, resulting in a small flow rate

[0012] Also, if the diameter and number of holes included in the outlet pipe are infinitely increased in order to improve the inflow of fluid into the permeation separation membrane, the outlet pipe will be damaged such as deformed or broken due to the pressure of the fluid flowing into the outlet pipe. , there is a problem of decreased durability

[0013] Korean Patent Application No. 2010-7023340 discloses a spiral-wound membrane module for forward osmosis, but it only discloses that the permeation module may include permeation tubes for introducing or collecting more than one fluid flow or may not include said permeation tubes without mentioning how said permeation tubes are constructed and how effective they are

Images